Alpha 1 stern drive parts / Outdrive drawings

Alpha One gears-bearings-shims-seals for upper gearcase

# 11210 Mercruiser Alpha One and generation two 20 / 22 series gears. 1970 thru 1997 for gear ratio of 1.50 or 1.47 Note heavy duty bearing # 21560 included in gear set. #11210 $272.79 OEM# 43-18411A2	# 21560 Bearing only included with 20 / 22 gears # 11210 Mercruiser 1 or Alpha One upper gear set V 8 20/22 Ratio 1.5 1970 thru 1997
# 11220 Mercruiser Alpha One 24 / 24 gear set for gear ratio of 1.65 or 1.62 in line 6 cylinder years 1970 thru 1997 with serial number 6225577 thru #11220 $240.79  OEM# 45814A5	Mercruiser gears 24/24 ratio 1.65 #11220 Upper gear set 1970 thru 1997 24/24 in line 6 cylinder
# 11230 Mercruiser Alpha one 17 / 19 gear set for gear ratio 1.84 or 1.81 for use with V 6 , and 470 / 470 outdrive units. #11230   $233.79   OEM# 43-75325A3	Aftermarket 17/19 ratio 1.84 Alpha One gears #11230 Alpha One gear set 1970 thru 1997 V-6 and 470 / 485
# 11240 Alpha one 20 / 24 gear set for ratio of 1.98 or 1.94 in line 4 cylinder. Mercruiser stern drive years 1983 thru 1990 with serial number 6225577 thru. #11240 $222.79 OEM # 43-55778A3	1983 thru 1990 OEM 43-55778A3 # 11240 Mercruiser Alpha one 20/24 gear set for ratio of 1.98 or 1.94 in line 4 cylinder.
# 21511 1972 thru 1990 upper cover bearing assembly O.D. of bearing is 1-25/32" ( 1.781 ) OEM # 31-32575A1 timken cone # LM11949 Outside Race LM11910  #21511 $16.79 OEM # 31-32575T1	1972 thru 1995 upper cover bearing 1-25/32 # 21511 1972 thru 1990 upper cover bearing assembly O.D. of bearing is 1-25/32
# 21510 1972 thru 1995 upper cover bearing assembly O.D. of bearing is 1-15/16" ( 1.937 ) #21510   $19.79   OEM# 31-61100A1	1972 thru 1995 upper cover bearing 1-15/16" # 21510 1972 thru 1995 upper cover bearing 1-15/16"
# 21520 Yoke shaft bearing for all mercruiser gear ratio except 1.32 OEM # 31-35988A2 six piece set   #21520 $103.79 OEM# 31-35988A12	1972 thru 1995 Roller bearing set # 21520 All Mercruiser gear ratio except 1.32 6 piece set
# 21560 Pinion gear ratio of 1.50 bearing race and cone  #21560   $30.79   OEM# 31-32573A1	OEM Alpha One bearing parts 1.50 gear ratio # 21560 Pinion gear ratio of 1.50 bearing race and cone
# 21540 Pinion bearing for gear ratio of 1.65, 1.84 and 1.98 bearing race and cone #21540 $26.79 OEM# 31-35990A1 If more service help is required, contact tech service for help troubleshooting your stern drive at (416) 751-7326	OEM Alpha One 1.65, 1.84 and 1.98 gear ratio # 21540 Pinion bearing for gear ratio of 1.65, 1.84 and 1.98